Improvement in lamps



, W. STA'BHLEN.

Lamp.

No. 219,559. Paten-ted sept.16,`1s79. x

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UNITED STATES PATENT FFICE.A

VILLIAM STAEHLEN, OF BROOKLYN, NEY YORK, ASSIGNOR TO BENNETT B.

` SCHNEIDER, OF NEW YORK CITY.

IMPROVEMENT IN LAMPS.

Specification forming part of Letters Patent No. 219,659, dated, September 1G, 1879; application `tiled January 25, 1879.

To all whom 'it 'may concern.:

Be it known that I, WILLIAM STAEHLEN,

` of Brooklymin the county of Kings and State Aof my invention consists in a mechanical lamp having a small reservoir elevated above the storage-reservoir, an overtlowpipe connecting the two reservoirs, a telescopic tube connect# ing the upper reservoir with the piston, and a peculiar device for raising the piston, and in the combination of parts, as will be hereinafter more fully set forth.

In the annexed drawings, which fully illustrate my invention, Figure l is a vertical section of a lamp embodying my invention. Fig. 2 is also a vertical section of the same at right angles with the section shown in Fig. l.

A represents the base of the lamp, supporting the lower or storage reservoir, B, within which is the piston C, forced downward by means of "a spring, D. The upper end of this spring bears against an offset or other device in the reservoir, and the lower end bears on top of the piston.

Elevated above the storage-reservoir B, and

separated therefrom, is a small reservoir, E,

` in the upper end of which the burner is to be secured, or otherwise arranged, so that the wick will hang down into said reservoir. The two reservoirs E and B are connected by means of an overflow-pipe, G, as shown.

In other lamps of this class the oil is forced up and overflows the top of the wicktube, and

the surplus oil drips into the reservoir above the piston.

In my lamp there is the additional small A reservoirE, elevated above and separated from the main reservoir, and the overflow-pipe G limits the rise of oil-above a certain point, and this without any regard to its capacity, whether large or small. This reservoir E may have a tube passing through it and connecting with the outer air, to permit the passage of air to the inside of the flame.

The overlow G may be located at any point` piston downward, forming a continuous tube from the lower to the upper reservoir.

In the tube I is a regulating cock or screw,

J, by which the inow of oil into the upper reservoir is regulated to the requirements of combustion. This regulating cock or screw extends through the side of the lamp, where it can be easily reached.

The piston C is elevated by means of a spurwheel, K, engaging with openings in a dat chain, L, passing over the wheel, and having both its ends fastened to the piston. f

Ordinarily, in this class of lamps, the piston is raised by means of a rack and pinion; but this cannot be used in my lamp, as the rack would come in contact with the bottom of the elevated reservoir; hence it necessitates the employment ofthe chain and spur-wheel.

The shaft a ofthe spurwheel extends through the side of the lamp, and is on its outer end provided with a suitable knob or key for turning the wheel.

With this construction of the lamp `any of the illuminating-oils now in use may be burned with perfect safety, because the large reservoir has no connection, except through pipe H,

with the reservoir from which the wick is supplied, and this upper reservoir has but a very small quantity of oil in it, but that quantity is maintained by theconstant supply.

The large reservoir may be lled, if desired,

through the small reservoir and overflow, or through a suitable inlet made for that purpose in the upper part of the main reservoir.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a lamp having a main reservoir with an interior piston operated by a spring or its equivalent, an auxiliary reservoir, E, elevated above and separated from the main reservoir, and in which a certain quantity of oil is 1naintained by the action of the piston and the overoW-pipe, substantially as herein set forth.

2. The overow G, arranged in combination With the elevated auxiliary reservoir E and main reservoir B, substantially as and for the purposes herein set forth.

3. The combination of the two reservoirs B and E, the piston O, and the telescopio tube H I, all constructed substantially as and for the purposes herein set forth.

4. The combination of the two reservoirs B and E and tube H, the piston (1with spring D, and the chain L and spur-wheel K, all oonstruoted substantially as and for the purposes herein set forth.

In testimony that I olailn the foregoing as my own I affix Iny signature in presence of two witnesses.

WILLIAM STAEHLEN.

Witnesses WILLIAM MILLsPAUGH, C. H. WATSON. 

